jones



Patented Mrch `29, |881p (NoModel.)

S. W, DAVIS.v

Lubricating Device.,Y No.` 239,462.

W J V wj .i V.. .k u f 1. n

` UNMED'l "STATES PATENT OFFICE.

SAMUEL W. nAvis,A or WILMINGTON, DEL., ASSIGNon or ONE-HALE To WILLIAMscooPEr., THOMAS J. JQNESJOHN w. GADBURY, JoEL'oAn- Y EURY, AND JONATHANEvANs, oru PHILADELPHIA, PA.

i LUBRICATINGDEVIC.

SPECIFICATION forming-part of Letters Patent No. 239,462, dated March29, 1881. Application iiled January 17, 1881. (No model.)

To all whom it may concern: g

Be it known that I, SAMUEL NV. DAVIS, a

citizen of the United States, residing in Wil-` mington, Delaware, haveinvented certain 1m- I provements in Lubricating Devices, ot' which thefollowing is a'specitication.

My invention relates to `certain improvements in that class oflubricatorsin which the oil liows to the bearing through a valved open-1o ing which regulates the tlow, the main object of my invention beingto so construct the regulating-valve as to accurately govern the tlow ofoil andreadily cut ott' or reestablish said iiow, a further object beingto permit the ready r5 iilling of the lubricator and the free entranceot' air to the oilreservoir.` i i .In the accompanying drawings, Figurel is a vertical section otfmy improved lubricator 5 Fig. 2, a sectionalplan on the line Vl `2; Fig. 2o 3, a sectional plan on the line 3 4; andFig. 4, an enlarged section of part ot' Fig. l, showing the parts in adifferent position. The casing of the lubrieator comprises the lowerportion or body, A, and cover B, an interna-lly-threaded recess in thecover being adapted tothe threaded upper end of the bod y, and the glassvessel D, forming the oilreser voir, being clamped between these twoportions ot' the casing, suitable packing-strips be- 3o ing arranged ateach edge of said vessel D to insure tight joints.

The body Aand cap B may be provided with openings, as shown, so Athatthey may be screwed together by` means of a spanner, or

' they may have hexagonal or octagonal portions adapted to an ordinarywrench.

The base ofthe lubricator has a central tubular projection, a, the loweror external portion of which is threaded `for adaptation to 4o anydesired piece oi' machinery, and in said tubular projection are formedtwo tapering valve-seats, b and d, adapted respectively to valves e andj',"the valve e being formed by tapering the lower end of a spindle, E,and the valve f consisting of a plug the threaded stem of which isadapted to an internallythreaded openin g in the said spindle E. Bothvalves are'made in the form ot inverted frustums of cones; but the valvej' is of a much less degree of taper than the valve c, and owing 5o toits threadedstem is adjustable in respect to said valve c, the lower endof the plug being notched for the reception of ascrew-driver, wherebythe adjustment of the valve may be ei'ected when desired. The spindle Eis eX- 55 panded and made tubular at the' upper en d, the exterior ofthis expanded portion having formed thereon a screw-thread, which isadapted to an internally-threaded projection, g, on the cover B, thethreaded portion ofthe spindle 6o terminating below in a shoulder formedby 'aflange, m, on the spindle.

To the spindle E, above the cover B, issecured a cap, F, in the top pfwhich is a central opening coinciding with the passage n ofthe tubu 65lar spindle, openings M serving to establish communication between saidpassage In and the interior ot' the oil-reservoir D, so that oil pouredinto the passage a will at once find its way into the reservoir.

Under ordinary circumstances the opening` in the cap F is closed by aplug, G, which may be threaded and adapted to a threaded opening in thecap, but which I prefer to make with plain sides and a central slot, thelatter eX- tending above the top of the cap, so that while the entranceot' dust and other obstructing particles is in a great measureprevented, air can at all times freely enter the passage a of thespindle and pass into the reservoir D. 8o The central slot in the plugrenders .the opposite halves of the same elastic, so that there issufficient friction to hold the said plug so firmly in place as toprevent accidental displacement, and yet permit the ready with- 8 5drawal ot' the plug` for the introduction of oil.

When the spindle E isin the position shown in Fig. lthevalve e is in itsseat b and the flow of oil to the bearing through the tubular projectiona is cut off; but by turning thejcap 9o F until the shouldermof thespindle comesinto contact with the under side of the cover jBthe spindlewill be elevated and the valve cremoved from its seat, so as topermitaiiow of oil between the valve f and its seat d, the volume otwhich low will depend upon the position to which the valve fhaspreviously been adjusted in respect to the valve c. (See Fig. 4.) Itwill thus be seen that the valve e acts as a stopvalve, and is alwayslifted from its seat to the same extent on properly turning the cap F,While the valvef, which regulates the ow of oil when the valve e isopen, can be so adjusted in respect to the latter as to accuratelygovern the area of the oil-passage between said valve fand its seat d.The cap F, being exposed, can be readily manipulated in order to open orclose thevalve e, so that when the lubricator is applied to alocomotive-engine the valves can be closed instantly, thus preventingwaste of oil while the locomotive is standing idle. The flange mprevents such an elevation of the spindle E as would permit more thanthe predetermined quantity of oil to pass the bearing, and in thisrespect myimproved lubricator is more advantageous than those in whichthe regulating devices are on the outsidev of the cup, and thegoverningvalve is first lifted to a greater extent than necessary, andthen allowed to return to a position for regulating the flow of oil.

In order to prevent the accidental lowering of the spindle E by thejarring to which the lubricator may be subjected, I interpose betweenthe projection a of the base and the flange m on the spindle E a spiralspring, fw, the tendency of which is to maintain the said spindle in itselevated position.

I claim as my inventionl. The combination of the reservoir D and thecasing having a tubular projection and valve-seats b and d with thespindle E, having a valve, e, adapted to the seat b, and a plug-valve,f, adjustable in respect to the valve e and adapted to the seat d, saidvalves e and f being made in the form of inverted cones of di'erentdegrees of taper, as set forth.

2. The combination of the reservoir D, the' casin g having valve-seats band d, the spindle E, having inverted-cone valves e and f, and theexternal cap, F, connected to said spindle E, as set forth.

3. The combination of the reservoir D, the casing having valve-seats band d and threaded projection g, the spindle E, having invertedconevalves e and j' and a threaded portion adapted to said projection g, andthe external cap, F, connected to said spindle E, as specilied.

4. The combination of the reservoir D, the casing having valve-seats band f1, the spindle E, having inverted-cone valves e and f, and ashoulder, m,for limiting its upward movement, as set forth.

5. The combination of the reservoir D and casing, having valve-seats band d and threaded projection g, the spindle E, having invertedconevalves e andf and a iiange, m, and the supporting-spring w, as setforth.

In testimony whereof Ihave signed my name to this specification in thepresence oftwo subsc1ibi1'1g'-n'itiiesses.

SAMUEL W. DAVIS.

Witnesses JAMES F. ToBiN, HARRY SMITH.

